Portable card type AED device and use method thereof

Abstract

The invention discloses a portable card type AED device which comprises a device body, the thickness of the device body is smaller than 5 mm, the weight of the device body is smaller than 70 g, and the device body comprises an outer layer, a middle layer, a core layer and a bottom layer which are sequentially laminated and integrated from top to bottom. A transparent flexible solar cell and a hydrophobic nano coating are integrated on the surface of the outer layer, the middle layer is an energy storage unit, and the core layer comprises a pair of pre-folded disposable electrocardio defibrillation electrode plates; a micro control module is integrated on the bottom layer to analyze heart rhythm types in real time and intelligently judge and trigger the high-voltage discharge circuit to execute defibrillation operation. Compared with the prior art, the portable card type AED device and the using method thereof have the advantages that the portable card type AED device is small in size and has the self-power-supply capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical emergency equipment, in particular to a portable card type AED device and a use method thereof. BACKGROUND

[0002] Cardiac arrest is a life-threatening emergency, with a golden rescue time of only 4-6 minutes. Automatic external defibrillator (AED) restores heart rhythm through electric shock, which is a key device to improve the survival rate of out-of-hospital cardiac arrest. However, the existing AEDs generally have problems such as large size, heavy weight, complex operation, dependence on mains power or unreliable battery, etc., which are difficult to carry around, limiting their popularity in public places and personal scenarios.

[0003] Although some miniaturized AEDs have been tried, it is still difficult to balance thickness, weight, energy output and ease of operation. In addition, traditional electrode patches need to be manually peeled off the back adhesive and applied with conductive paste, which is time-consuming and prone to errors; the power supply system is single and prone to failure in extreme environments; there is no real-time judgment of electrode contact quality, and there is a risk of invalid discharge.

[0004] Therefore, there is an urgent need for a new type of AED device that can be truly carried in a card bag, does not require professional training, has self-power supply capability, and can automatically complete attachment and defibrillation. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the above technical defects and provide a portable card type AED device with a small size and self-power supply capability, and a use method thereof.

[0006] To solve the above technical problems, the technical solution provided by the present application is as follows: a portable card type AED device, comprising a device body, the device body has a thickness of less than 5mm and a weight of less than 70g, and comprises an outer layer, an intermediate layer, a core layer and a bottom layer which are laminated and integrated from top to bottom; The surface of the outer layer is integrated with a transparent flexible solar cell and a hydrophobic nano coating, the intermediate layer is an energy storage unit, and the core layer comprises a pair of pre-folded disposable electrocardio-defibrillation electrode patches. The bottom layer is integrated with a micro control module to analyze the heart rhythm type in real time and intelligently judge to trigger a high-voltage discharge circuit to perform defibrillation operation.

[0007] Preferably, the energy storage unit of the intermediate layer comprises a graphene-based supercapacitor array configured to release 120J to 200J of biphasic wave defibrillation energy within 3 seconds after activation.

[0008] Preferably, the pair of pre-folded disposable electrocardio-defibrillation electrode patches are built-in with a shape memory alloy framework. In a non-use state, the pre-folded disposable electrocardio-defibrillation electrode patches are folded in a Z shape and stored on both sides of the device body. After unfolding, the device automatically conforms to the standard thoracic contour of an adult.

[0009] Preferably, each of the pre-folded disposable electrocardio defibrillation electrode patches is covered with a sealed hydrogel capsule filled with conductive gel. The hydrogel capsule ruptures to release the conductive gel when the electrode patch is pressed against the chest of a patient.

[0010] Preferably, the sealed hydrogel capsule is made of biodegradable polymer.

[0011] Preferably, the micro control module comprises a low-power AI processing chip, an electrocardio signal acquisition circuit, a dual-channel bioimpedance detection unit, a high-voltage discharge driving circuit and a voice prompt unit.

[0012] Preferably, the control logic of the low-power AI processing chip comprises: When it is detected that both electrode patches are in contact with the skin and the contact impedance is less than 100Ω, the high-voltage circuit is unlocked and a biphasic defibrillation pulse is discharged; If the impedance is not less than 100Ω, the user is prompted to correct the electrode position through the voice navigation unit.

[0013] Preferably, the device body is further integrated with a friction nanogenerator and a body temperature difference power generation unit. The friction nanogenerator generates start-up electric energy through kinetic energy conversion when the device packaging film is torn open. The body temperature difference power generation unit continuously supplements electric energy by utilizing temperature difference after the electrode patch contacts the human skin. The flexible solar cell, the friction nanogenerator and the body temperature difference power generation unit jointly constitute a three-source power supply system to charge the graphene supercapacitor array.

[0014] Another aspect of the present application discloses a method for using the card-type AED device, comprising the following steps: S1: After the device is activated, at least one of the flexible solar cell, the friction nanogenerator and the body temperature difference power generation unit is used to charge the graphene supercapacitor array; S2: A pair of pre-folded disposable electrocardio defibrillation electrode patches are unfolded to automatically conform to the chest area of a patient, and the hydrogel capsule is ruptured to release the conductive gel when pressed; S3: Real-time acquisition of the electrocardio signal of the patient and synchronous detection of the contact impedance between the two electrodes and the skin are performed; S4: When it is determined that the heart rhythm is a defibrillatable rhythm and the dual-channel contact impedance is less than 100Ω, the high-voltage discharge circuit is triggered to release 120J to 200J of biphasic defibrillation energy within 3 seconds. S5: If the contact resistance is not less than 100Ω, the user will be prompted by voice to adjust the electrode position until the impedance meets the discharge conditions or the operation is terminated.

[0015] The advantages of this invention compared with the prior art are: this invention provides a card-type AED device with a thickness of less than 5mm and a weight of less than 70g, which can be easily put into a wallet and achieve true portability; The innovative device uses a three-source synergistic power supply of flexible solar energy, triboelectric nano-power generation and body temperature difference power generation, eliminating the dependence on external power sources; the pre-folded electrodes have built-in shape memory alloys, which automatically unfold and fit the chest when torn, and the surface hydrogel capsules rupture under pressure to release conductive gel, requiring no manual operation. The entire process of tearing, attaching, analyzing, and defibrillating is fully automated, which greatly reduces the barrier to entry, improves the success rate of out-of-hospital cardiac arrest resuscitation, and is easy to promote and use. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the method of using the present invention. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Combined with appendix Figure 1 As shown, a portable card-type AED device includes a device body with a thickness of less than 5mm and a weight of less than 70g. The device body includes an outer layer, a middle layer, a core layer, and a bottom layer that are laminated and integrated from top to bottom. The ultra-thin and lightweight design allows it to be carried around like a bank card, greatly improving the accessibility and popularity of public emergency medical equipment. The outer layer integrates transparent flexible solar cells and a hydrophobic nano-coating, enabling it to continuously collect energy in everyday sunlight environments while also possessing excellent waterproof and stain-resistant capabilities, ensuring reliable operation of the device in humid or harsh environments. The middle layer is an energy storage unit, specifically including a graphene-based supercapacitor array, configured to release 120J to 200J of biphasic defibrillation energy within 3 seconds after activation, meeting the clinical defibrillation timeliness requirements while taking into account energy density and safety. The core layer contains a pair of pre-folded disposable ECG defibrillation electrodes with a built-in shape memory alloy skeleton. When not in use, they are folded in a Z-shape and stored on both sides of the device body. When unfolded, they can automatically conform to the human standard chest contour without requiring the user to manually adjust the position, significantly reducing the operating threshold. Meanwhile, each pre-folded disposable ECG defibrillation electrode pad is covered with a sealed hydrogel capsule, which is filled with conductive gel. The capsule automatically breaks and releases the gel when the electrode pad is pressed against the patient's chest, achieving immediate conduction upon application and avoiding the risk of failure caused by traditional electrodes due to drying or poor contact. The sealed hydrogel capsule is made of biodegradable polymer and can degrade in the natural environment after use, reducing the burden of medical waste disposal and reflecting the concept of environmental protection design. The underlying layer integrates a micro control module, including a low-power AI processing chip, an electrocardiogram signal acquisition circuit, a dual-channel bioimpedance detection unit, a high-voltage discharge drive circuit and a voice prompt unit, to achieve integrated intelligent control from signal perception to decision execution.

[0019] When in use, the control logic of the low-power AI processing chip is set as follows: the high-voltage circuit is unlocked to deliver biphasic defibrillation pulses only when both electrode patches are in contact with the skin and the contact impedance is less than 100Ω; if the impedance is not less than 100Ω, the user is prompted to correct the electrode position through the voice navigation unit, which effectively prevents ineffective or dangerous discharges and improves the safety of rescue. In one embodiment: The device also integrates a triboelectric nanogenerator and a thermoelectric generator: the triboelectric nanogenerator generates starting power through kinetic energy conversion when the device's packaging film is torn open, achieving "tear-to-start" operation; the thermoelectric generator continuously replenishes power by utilizing the temperature difference after the electrode plates come into contact with human skin; combined with the flexible solar cells on the outer layer, the three together form a three-source power supply system to charge the graphene supercapacitor array, completely eliminating dependence on external power sources and ensuring energy reliability in extreme scenarios.

[0020] In specific implementation, this invention includes the following steps: S1: After the device is activated, the graphene supercapacitor array is charged by at least one of the following: flexible solar cells, triboelectric nanogenerators, and thermoelectric generators. S2: Unfold a pair of pre-folded disposable ECG defibrillation electrode pads so that they automatically fit into the patient's chest area and rupture the hydrogel capsules to release the conductive gel when pressure is applied; S3: Real-time acquisition of patient's electrocardiogram signals and simultaneous detection of contact impedance between the two electrodes and the skin; S4: When the heart rhythm is determined to be defibrillable and the contact impedance of both channels is less than 100Ω, the high-voltage discharge circuit is triggered to release 120J to 200J of biphasic defibrillation energy within 3 seconds. S5: If the contact resistance is not less than 100Ω, the user will be prompted by voice to adjust the electrode position until the impedance meets the discharge conditions or the operation is terminated.

[0021] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0022] Working principle of the invention: When the packaging film of the card-type AED device of the present invention is torn open, the triboelectric nanogenerator generates starting power to wake up the system; Flexible solar cells and thermoelectric generators work together to charge a graphene supercapacitor array.

[0023] The user places the device on the patient's chest. The pre-folded electrode pads automatically unfold and conform to the chest using shape memory alloy. Upon pressure, the surface hydrogel capsule ruptures, releasing conductive gel to establish a low-impedance pathway. The underlying micro-control module collects ECG signals in real time and uses dual-channel bioimpedance detection to determine the electrode contact quality: only when the heart rhythm is defibrillable and both impedances are less than 100Ω will 120–200J of biphasic defibrillation energy be released within 3 seconds; if the impedance is too high, a voice prompt will prompt adjustment of the position. The entire process requires no manual intervention, achieving fully automated emergency rescue from tearing, attaching, analyzing, to defibrillation, combining high safety, portability, and environmental adaptability.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A portable, card-style AED device, characterized by: The device body has a thickness less than 5mm and a weight less than 70g, and comprises an outer layer, a middle layer, a core layer and a bottom layer laminated and integrated in sequence from top to bottom; The surface of the outer layer is integrated with a transparent flexible solar cell and a hydrophobic nano coating, the middle layer is an energy storage unit, and the core layer comprises a pair of pre-folded disposable electrocardio-defibrillation electrode pads; The bottom layer is integrated with a micro control module for real-time analysis of heart rhythm type and intelligent determination of defibrillation operation triggered by a high-voltage discharge circuit.

2. A portable card AED device according to claim 1, characterized in that: The energy storage unit of the middle layer comprises a graphene-based super capacitor array configured to release 120J to 200J of biphasic wave defibrillation energy within 3 seconds after activation.

3. A portable card AED device according to claim 1, characterized in that: The pair of pre-folded disposable electrocardio-defibrillation electrode pads are internally provided with a shape memory alloy framework; In a non-use state, the electrode pads are folded in a Z shape and stored on both sides of the device body; After unfolding, the electrode pads are automatically attached to the standard thoracic contour of an adult.

4. A portable card AED device according to claim 3, characterized in that: Each of the pre-folded disposable electrocardio-defibrillation electrode pads is covered with a sealed hydrogel capsule filled with conductive gel; The hydrogel capsule is broken and releases the conductive gel when the electrode pad is pressed against the patient's chest.

5. A portable card AED device according to claim 4, characterized in that: The sealed hydrogel capsule is made of biodegradable polymer.

6. A portable card AED device according to claim 1, characterized in that: The micro control module comprises a low-power AI processing chip, an electrocardio signal acquisition circuit, a double-channel bioimpedance detection unit, a high-voltage discharge driving circuit and a voice prompting unit.

7. A portable card AED device according to claim 6, characterized in that: The control logic of the low-power AI processing chip comprises: When it is detected that both electrode pads are in contact with the skin and the contact impedance is less than 100Ω, the high-voltage circuit is unlocked and a biphasic wave defibrillation pulse is discharged; If the impedance is not less than 100Ω, the user is prompted to correct the electrode position through the voice navigation unit.

8. The portable card AED device of claim 1, wherein: The device body is also integrated with a friction nanogenerator and a body temperature difference power generation unit; The friction nanogenerator generates start-up electric energy through kinetic energy conversion when the device packaging film is torn open; The body temperature difference power generation unit continuously supplements electric energy after the electrode pads contact the human skin; The flexible solar cell, the friction nanogenerator and the body temperature difference power generation unit jointly constitute a three-source power supply system to charge the graphene super capacitor array.

9. A method of using a portable card AED device according to any one of claims 1-8, characterized in that: The method comprises the following steps: S1: After the device is activated, at least one of the flexible solar cell, the friction nanogenerator and the body temperature difference power generation unit is used to charge the graphene super capacitor array; S2: A pair of pre-folded disposable electrocardio-defibrillation electrode pads are unfolded to automatically attach to the patient's chest area, and the hydrogel capsule is broken to release the conductive gel when pressed; S3: The electrocardio signal of the patient is collected in real time, and the contact impedance between the two electrodes and the skin is detected synchronously; S4: When it is determined that the heart rhythm is a defibrillatable heart rhythm and the contact impedance of both channels is less than 100Ω, the high-voltage discharge circuit is triggered to release 120J to 200J of biphasic wave defibrillation energy within 3 seconds; S5: If the contact impedance is not less than 100Ω, the user is prompted to adjust the electrode position through voice until the impedance meets the discharge condition or the operation is terminated.

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